/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

'use strict';

import {ILanguage, IRichLanguageConfiguration} from './types';

export var conf:IRichLanguageConfiguration = {
	// the default separators except `@$`
	wordPattern: /(-?\d*\.\d\w*)|([^\`\~\!\#\%\^\&\*\(\)\-\=\+\[\{\]\}\\\|\;\:\'\"\,\.\<\>\/\?\s]+)/g,
	comments: {
		lineComment: '//',
		blockComment: ['/*', '*/'],
	},
	brackets: [['{','}'], ['[',']'], ['(',')'], ['<','>']],
	autoClosingPairs: [
		{ open: '"', close: '"', notIn: ['string', 'comment'] },
		{ open: '\'', close: '\'', notIn: ['string', 'comment'] },
		{ open: '{', close: '}', notIn: ['string', 'comment'] },
		{ open: '[', close: ']', notIn: ['string', 'comment'] },
		{ open: '(', close: ')', notIn: ['string', 'comment'] },
		{ open: '<', close: '>', notIn: ['string', 'comment'] },
	]
};

export var language = <ILanguage> {
	defaultToken: '',
	tokenPostfix: '.java',

	keywords: [
		'abstract', 'continue', 'for', 'new', 'switch', 'assert', 'default',
		'goto', 'package', 'synchronized', 'boolean', 'do', 'if', 'private',
		'this', 'break', 'double', 'implements', 'protected', 'throw', 'byte',
		'else', 'import', 'public', 'throws', 'case', 'enum', 'instanceof', 'return',
		'transient', 'catch', 'extends', 'int', 'short', 'try', 'char', 'final',
		'interface', 'static', 'void', 'class', 'finally', 'long', 'strictfp',
		'volatile', 'const', 'float', 'native', 'super', 'while', 'true', 'false'
	],

	operators: [
		'=', '>', '<', '!', '~', '?', ':',
		'==', '<=', '>=', '!=', '&&', '||', '++', '--',
		'+', '-', '*', '/', '&', '|', '^', '%', '<<',
		'>>', '>>>', '+=', '-=', '*=', '/=', '&=', '|=',
		'^=', '%=', '<<=', '>>=', '>>>='
	],

	// we include these common regular expressions
	symbols:  /[=><!~?:&|+\-*\/\^%]+/,
	escapes: /\\(?:[abfnrtv\\"']|x[0-9A-Fa-f]{1,4}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})/,
	digits: /\d+(_+\d+)*/,
	octaldigits: /[0-7]+(_+[0-7]+)*/,
	binarydigits: /[0-1]+(_+[0-1]+)*/,
	hexdigits: /[[0-9a-fA-F]+(_+[0-9a-fA-F]+)*/,

	// The main tokenizer for our languages
	tokenizer: {
		root: [
			// identifiers and keywords
			[/[a-zA-Z_$][\w$]*/, { cases: { '@keywords': {token:'keyword.$0'},
																	'@default': 'identifier' } }],

			// whitespace
			{ include: '@whitespace' },

			// delimiters and operators
			[/[{}()\[\]]/, '@brackets'],
			[/[<>](?!@symbols)/, '@brackets'],
			[/@symbols/, { cases: { '@operators': 'delimiter',
															'@default'  : '' } } ],

			// @ annotations.
			[/@\s*[a-zA-Z_\$][\w\$]*/, 'annotation'],

			// numbers
			[/(@digits)[eE]([\-+]?(@digits))?[fFdD]?/, 'number.float'],
			[/(@digits)\.(@digits)([eE][\-+]?(@digits))?[fFdD]?/, 'number.float'],
			[/0[xX](@hexdigits)[Ll]?/, 'number.hex'],
			[/0(@octaldigits)[Ll]?/, 'number.octal'],
			[/0[bB](@binarydigits)[Ll]?/, 'number.binary'],
			[/(@digits)[fFdD]/, 'number.float'],
			[/(@digits)[lL]?/, 'number'],

			// delimiter: after number because of .\d floats
			[/[;,.]/, 'delimiter'],

			// strings
			[/"([^"\\]|\\.)*$/, 'string.invalid' ],  // non-teminated string
			[/"/,  'string', '@string' ],

			// characters
			[/'[^\\']'/, 'string'],
			[/(')(@escapes)(')/, ['string','string.escape','string']],
			[/'/, 'string.invalid']
		],

		whitespace: [
			[/[ \t\r\n]+/, ''],
			[/\/\*\*(?!\/)/,  'comment.doc', '@javadoc' ],
			[/\/\*/,       		'comment', '@comment' ],
			[/\/\/.*$/,    		'comment'],
		],

		comment: [
			[/[^\/*]+/, 'comment' ],
			// [/\/\*/, 'comment', '@push' ],    // nested comment not allowed :-(
			// [/\/\*/,    'comment.invalid' ],    // this breaks block comments in the shape of /* //*/
			[/\*\//,    'comment', '@pop'  ],
			[/[\/*]/,   'comment' ]
		],
		//Identical copy of comment above, except for the addition of .doc
		javadoc: [
			[/[^\/*]+/, 'comment.doc' ],
			// [/\/\*/, 'comment.doc', '@push' ],    // nested comment not allowed :-(
			[/\/\*/,    'comment.doc.invalid' ],
			[/\*\//,    'comment.doc', '@pop'  ],
			[/[\/*]/,   'comment.doc' ]
		],

		string: [
			[/[^\\"]+/,  'string'],
			[/@escapes/, 'string.escape'],
			[/\\./,      'string.escape.invalid'],
			[/"/,        'string', '@pop' ]
		],
	},
};